http://www.legislation.gov.uk/eudr/2004/99/article/4Commission Directive 2004/99/EC of 1 October 2004 amending Council Directive 91/414/EEC to include acetamiprid and thiacloprid as active substances (Text with EEA relevance)Commission Directive 2004/99/ECCommission Directive 2004/99/EC of 1 October 2004 amending Council Directive 91/414/EEC to include acetamiprid and thiacloprid as active substances (Text with EEA relevance)2020-12-12King's Printer of Acts of Parliamenthttps://webarchive.nationalarchives.gov.uk/eu-exit/https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32004L0099texttext/xmlen2004-10-01 Article 4 This Directive shall enter into force on 1 January 2005.